Spindle swing bracket



1933. R. J, BARTHOLOMEW ,896,505

SPINDLE SWING BRACKET Filed Jan. 5, 1931 2 Sheets-Sheet 1 7 INVENTOR.

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1933- R. J, BARTH OLOMEW 1,896,505

' SPINDLE SWING BRACKET Filed Jan. 3, 1931 2 Sheets-Sheet 2 K INVENTOR.

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A TTORNEYS.

Patented Feb. 7, 1933 UNITED stares rarasrierrics I ROBERT J. BARTHOLOMEW, or Gnnilmnrown, PENNSYLVANIA; Assrenon T0 FLETGHER wonxs; INCORPORATED, or PHILADELPHIA, rnnnsynvama, A conroaa'rron or PENNSYLVANIA srINn-LE swrne nn-acxnr Application fil ed J'anuary a, 1931. Serial No. sca ierare driven by the frictional contact of the whorl against the driving belt and speed is a function of the contact pressure; A comparatively heavy pressure of course will allow very little slippage whereas a light pressure allows more slippage. The take-up rolls are driven at a constant ratio to the belt speed and hence it will be obvious that a variation in speed between one spindle and the next will cause a similar variation in twist of the threads being twisted or spun.

In the drawings accompanyingthis application: I

Fig. 1 shows an embodiment of my invention in part sectional elevation;

Fig. 2 is a section on the line 22 of Fig. 1;

Fig. 3 is a section on the line 3-3 of Fig. 2;

Figs. 4 and 5 are views of a modification; and

Fig. 6 is a fragmentary view in elevation of a spinner employing my construction.

Referring to the drawings in detail, 1 designates a spindle blade, 2 a bobbinand 3 a whorl, the whorl being driven by frictional contact of the same with a driving belt 4.

The spindle base is carried in a swing bracket designated 6, which is mounted for movement about a swing stud 7 secured to the rails 8 and 9. The bracket 6 is under spring tension, the spring being shown at 10, to hold the whorl 3 1n driving contact with the belt 4:.

The present invention is directed to the arrangement of this spring, means being provided whereby the tension in the spring may be adjusted so that all the whorls in the machine may be held against the driving belt with the proper pressure to insure the same speed in all the spindles. To this end, therefore, the spring 10 is coiled about the swing stud 7 and one end is fastened to theb'raclret as shown at 11, while the other end,

is inserted in an adjusting collar 12 as shown at 13. This adjusting collar is mounted. on

the swing stud 7 as will be seen from Fig. 1, for instance. By turning this collar on the stud 7' the tension in the spring 10 may be varied. The collar is held in adjusted position by'a set screw 14- which is mounted in a bracket 15 provided for that purpose on the swing bracket.

It will be understood of course, as illus trated in Fig. 6 that in a machine there are a plurality of the structures above described and that by providing an'individual ad ustment for each swing spring the pres sure of the whorls 3 against the driving belt.

may be regulated with great accuracy so that the spindles will be driven at the desired speed.

In the modification shown in Figs. 4. and:

5-, theswing bracket is designated 6, the

swing stud 7, this stud being mounted in a sleeve S on a bracket 15 adapted to besecured to the rails 8 and 9. The sleeve S is provided with retaining lugs '16 and'the swing bracket 6 with a lug 17 adapted toengage one or the other of the retaining lugs I 16 thereby. preventing lifting of the swing bracket off the stud when a bobbin isbeing.

removed from the spindle blade. Surrounding the sleeve S is a spring 10 one end of which as shown at 11 is attached to the bracket 6, the other end of'the spring being attached to an adjusting collar 12. collar surrounds and cooperates with a collar 18 rigid with the sleeve The collars 12'" and 18 :have corrugatedor other type of ir+ regular adjacent faces to lock the collar 12 against accidental rotation with the fixed collar 18. corrugations or irregular surfaces take the respect to placeof the set screw 14 of the first embodiment of my invention. 7

It will be seen from the foregoing that in both" embodiments of my invention I have provided means for adjusting the pressure This These collars with their.

of the whorl on the driving belt whereby the spindles will be drivenatthe proper speed.

It will be appreciatedalso that both emcollar to which the spring is attached for ad- GET bodiments described provide for trictionally holding the parts in adjusted position, and that in the embodiment of Figs. 4 and 5 the construction is such that accidental displacement of the swing when removing a bobbin from the spindle blade is prevented.

It is to be understood that changes may be made in the details of construction and arrangement of parts within the purview of my invention.

hat I claim is 1- 1. A machine of the class described comprising a plurality of spindles, a whorl for each spindle, a driving belt common to said whorls, a swing bracket for each spindle, a spring for each bracket for holding said whorls in contact with said belt, said springs being adjustable independently to eiiect independent adjustment of the pressure of said whorls against said belt.

2. In a machine of the class described C0111- prising a plurality of spindles, a whorl for each spindle, a driving belt common to said whorls, a swing bracket for each spindle, a

spring for each bracket for holding the brackets in position to eitect driving engagement of the whorls with said belt, and means for adjusting said springs independently to vary the position of the corresponding swing bracket to effect a corresponding change in the pressure of the whorls against said belt.

3. In a machine of the class described the combination of a spindle swing bracket, 2 spring for the bracket, and an adjustable j usting said spring.

4. In a machine of the class described the combination of a spindle swing bracket, a spring for the bracket, a collar for adjusting said spring, and frictional means for holding:

the collar in adjusted position.

5. In a machine of the class described the combination of a spindle swing bracket, a mount for the bracket, a spring on said mount, an adjusting collar on saidmount,

and a spring for said bracket, one end of the spring being attached to the bracket'and the other end to the collar, and friction means for holding the collar in adjusted position on "said mount. I

6. In a machine of the class described the combination of a spindle swing bracket, a-

mount for the bracket, a spring. for the bracket, one end of said spring belng connect- 3 ed to the bracket, an adjusting collar to which the other end of the spring is connected, and means attired to the bracket and frictionally engaging the collar for holding the collar in adjusted position.

7. In a machine of the class described the combination of a spindle swing bracket, a mount for the bracket, a spring for the bracket, one end of said spring being connected to. the bracket, an ad usting collar to.

which the other end of the spring: is consaid mount to which the other end of the spring 18 connected, second collar fixed on said mount telescoped byth'e first collar, the adjacent contacting faces of said collars being corrugated to hold the adjusting collar in adjusted position.

This specification signed this 27 day of Dec.,1930. 7 7 V w 7 ROBERT J. BARTI-IOLOMEVV. 

